OSS endpoint or Commercial Endpoint for Yealink t26


I have purchased Commercail EPM and installed and following are the details
Product Name: OSS FreePBXDistro
Licensed Products:?
Global License Expiration 03-Jan-2030
Endpoint Expires 2033-05-11

I have got remote phonebook in same locations as the config files for the file in /tfptpboot/folder and updated the phone templater for each phone to point to ipaddress/xxxx.xml, but on phone it gives message ‘Load remote phone book error’.

also i have changed the image to replace Yealink logo with customised Logo and uploaded using settings>Endpoint Mangement/image management; also changed in template the logo to be customed but it is not displaying logo.